21.   Investigators are conducting interviews, lie detector tests and criminal background checks on visitors and dozens of workers who have been remodeling the Depression-era headquarters building.

22.   Investigators were conducting forensic tests to determine the origin of the blood.

23.   Investigators were conducting tests Sunday to establish why the nuts became detached.

24.   Investigators conducted interviews and reviewed subpoenaed records, obtained after legal battles with the power companies, to gather evidence of allegedly unnecessary plant shutdowns, Lynch said.

25.   Investigators were conducting forensic and metallurgic tests Sunday to establish why the nuts became detached.

26.   Reilly repeated a call for the DeSalvo family to provide a DNA sample from a family member so investigators can conduct further tests.

27.   The bodies were still in the tunnel Friday evening, left in place so investigators could better conduct their inquiry into the causes of the fire.

28.   Five investigators were conducting the search using jackhammers.

29.   Congressional investigators conducted a five-month probe of Aum Supreme Truth as part of a wider investigation into global terrorism.

30.   Pakistani Prime Minister Benazir Bhutto has said foreign investigators would conduct an investigation into the recent killing of her younger brother, Mir Murtaza Bhutto, reports said Saturday.